1 Astrology
1.1 Origin
Brazil, Kenya, Madagascar, Southern and central Africa
Southern and central Africa
1.3 Color
Brown, Black
Yellow, White
1.5 Streak
White
gray, Brownish, Black
1.7 For which Rashi?
Capricorn, Sagittarius
Not Available
1.9 Planet
1.11 Element of Planets
1.13 How to Wear?
1.13.1 Finger
Not Available
Not Available
1.13.3 Ring Metal
Not Available
Not Available
1.15 Energy
1.17 Deities
1.19 Not to wear with
Not Available
Not Available
1.21 Powers
1.23 Birthstone
1.23.1 Planetary
Not Available
Not Available
1.23.3 Talisman
Not Available
Not Available
3 Physical Properties
3.1 Tenacity
3.3 Solubility
Not Available
Not Available
3.5 Durability
Not Available
Not Available
3.7 Specific Gravity
3.9 Fracture
Conchoidal, ConchoidalWalter Schumann, Gemstones of the world (2001)
UnevenArthur Thomas, Gemstones (2009), UnevenArthur Thomas, Gemstones (2009), Uneven
3.11 Cleavage
{0110} Indistinct
{010} Indistinct
3.13 Mohs Hardness
3.14 Chemical Composition
SiO2
FeS 2Michael OâDonoghue , Gems, Sixth Edition (2006) More from other references
4 Optical Properties
4.1 Luster
4.2 Pleochroism
4.3 Dispersion
5.4 Transparency
Transparent, Translucent, Transparent to translucent
Gemmological Tables (2004) More from other references
5.5 Refractive Index
1.544-1.553Not Available
1
3.25
5.8 Optic Character
Not Available
Not Available
5.9 Crystal System
5.10 Birefringence
0.009Not Available
0
0.296
5.14 Clarity
Opaque
Gemmological Tables (2004) More from other references
6 Benefits
6.2 Physical
6.2.1 Neurological
Not Available
Not Available
6.2.2 Cardiovascular
Not Available
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7.1.2 Respiratory
Not Available
Not Available
7.1.4 Reproductive
Not Available
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7.1.6 Digestive
Not Available
Not Available
7.2 Psychology
Not Available
Not Available
7.3 Healing
Not Available
Not Available
7.5 Qualities Associated
Not Available
Not Available